A system has a mirrored data volume group that has a filesystem /data of 10 logical partitions.  How many physical partitions will the filesystem have？（）

A.spot， lpp_source
B.mksysb， lpp_source
C.boot， bundle， nim_script
D.aix disks， spot， lpp_source

A./etc/.rhosts and $HOME/hosts.equiv
B./etc/hosts.equiv and $HOME/.rhosts
C./etc/rhosts.equiv and $HOST/.rhosts
D./etc/hosts.equiv and $HOME/.hosts.equiv

A.errclear 0
B.errpt -r -j 
C.errclear -j 
D.errclear -k